Operating table



Feb. 15,, 1949- G. A. BREWSTER OPERATING TABLE 2 Sheets-Sheet 1 FiledMarch 29, 1946 M m M5 .1 m? pm Feb. 15, 1949. R W ZA6L$Z7 OPERATINGTABLE Filed March 29, 1946 2 Sheets-Sheet 2 In U67? 7 George A BREW/S282 Patented Feb. 15, 1949 NI E -STATES PATENT OFFICE i 2,461,627oPnRATING TABLE George A. Brewster, Buflalo, N. Y. Application March.29, 1946', Serial No. 658,065

or alignment at which complete relaxation is either promoted orfacilitated. 1

. The principal object of the inventionis to provide an improved tableupon which a patientmay lie,- which may be adjusted so that the weightof the patient will cause the top portions of the table to moveautomatically to a position at which the parts of "the body of thepatient are placed in proper alignment.

Another object of commodate the weight of the patient and which, whenadjusted, will support the patient resiliently in the desired position.

A further object is to provide a table in which either or both of thetop portions thereof may be easily and quickly locked in a horizontalposition. 1

Another aim is to provide such a table with means for supporting thehands of the patient to increase the comfort of the patient.

.. A further object is to provide a simple, sturdy and compactconstruction whichmay be inexpensively manufactured.

In the accompanying drawings:

Fig. l is a side elevation of the table.

Fig. 2 is a top plan view thereof.

Fig. 3 is a fragmentary right end elevation of the table shown in Fig.1.

Fig. 4 is a fragmentary, sectional view taken along the line 4-4, Fig.3.

Fig. 5 is a view similar to Fig. 4 and showing the locking means in anunlocked condition.

Fig. 6 is a fragmentary sectional view taken along the line 6-6, Fig. 3.

Fig. 'l is a view similar to Fig. 6 and showing the parts in a differentrelative position.

Fig. 8 is a fragmentary, sectional view taken along the line 8--8, Fig.7.

A patient supporting surface is provided by a pair of conterminous topsections l0, each of which is pivotally mounted on separate cross orpivot rods ll. While any suitable supporting means for the pivot rods.ll may be used, it is preferred, as shown in the drawings, to supportthe pivot pins II on a frame of rectangular outthe invention is toprovide a-table which may be readily adjusted to ac- 2 Claims. (Cl.311-7) line comprising vertical posts 12, horizontal longitudinal rods13 and horizontal transverse rods l4, each pivot pin l I being mountedon the upper end of a post l2. For appearance, a covernli can beprovided for the lower portion of the frame.

A semi-circular rod 16 is arranged on the inner side of each post l2 andis connected at both endsto the respective top section In so as to beconcentric with the corresponding pivot pin ll. Each pair oftransversely spaced semi-circular rods l6 so provided are connectedtogether by a cross member or bar I1, as best-shown in Fig. 3. Eachsemi-circular rod l6 carries a collar 18 which is slidable along therodand anadjusting collar l9 which is arranged adjacent its upper inner endand can be held in any given position on the rod by the screw 26'. Acoil spring 2| embraces each semi-circular rod and atone end bearsagainst the collar l8 and at it'sopposite end against the adjustingcollar [9.

Arranged immediately adjacent each vertical post [2, each transverse rodl4 carries a stop plate 22 provided with a semi-circular recess which isconcentric with the cross-sectional circular form of the companionsemi-circular rod I6,as best shown in Fig. 8. The innerface of the stopplate 22 engages the opposing face of the collar l8 and acts as a stoptherefor. The outer face of the stop plate 22 is adapted to engage thestop lug 23 carried by the semi-circular rod Hi, this stop lug being inthe form of a semi-circular collar welded to the rod E6. The stop lug 23on each semi-circular rod 16 is so positioned thereon that it engagesthe companion stop plate 22 when the top sections ID are in a horizontalposition. It will therefore be seen that the top sections I0 areprevented from retrograde tipping movement.

While the top sections I0 are in this horizontal position with thecompanion stop lugs 23 and stop plates 22 in abutting engagement, thetop sections can be easily and quickly latched or locked in thisposition.

For this purpose, a semi-circular lock or latch member 24 is pivotallymounted on the cross member H, which it will be noted is arranged on theouter side of the stop lugs 23, and adapted to engage the correspondingframe transverse rod M. An L-shaped lever 25 is mounted on the lockmember 24. When the parts are in their respective positions shown inFig. 4, the top section I0 is locked in an immovable position withrespect to the table frame. When the lever 25 is manually operated tomove the lock member 24 to the position shown in Fig. 5, the top sectionI is free to move relative to the table frame, such movement beingcaused by the weight of the patient lying on the top sections In andresisted by the springs. A tilted position of the right section ID, aswould be occasioned by the weight of the patient lying on the table, isshown by interrupted lines in Fig. 1. It will be noted that theadjusting collars i9 may be easily shifted to any desired positions ontheir semi-circular rods US so as-to aitljustithe:resilientfaction' ofthe springs 2 i, as desired. 7

The top section [0 having the face receiving aperture 26 carries handsupporting means for the patient which comprise a pair of transverselyspaced hanger rods 21 pivotally mounted at their upper ends on pivotpins 28 secured' to-thetop section I0 in any suitable mannereandoonnectedat their lower ends by a transverse bar 2%} which extendslaterally outwardly from the hanger rods to provide hand grips 30. Whilelying face downward-lpnithestop sections lithe :pa'ti'ent scan fgraspathezgrips aflsand thereby increase hiS "00mfOT:tlDT iean:bracerhims'elf "thereon to I support the: upper part-:ofzhisb'odyzasima be required. by theixtreat i-ment being .freceived.

From the foregoing it will be seen that theipres- :invention "providesan :eperatin-g ztabl'e :hav- :ingitop portionsi whichimove automaticallyto :a iposition at whichithezpartsiofithe 'b'odyco'f t'he'ipa-.tientrarerilaced iiniproper alignment and :resil- 'zientiy :support thepatient in :such position; wherein :such .aresi'liency can "be easilyeadjust'ed'; wherein. eitherzor :bothofzsaid' topisections -can'. be:easiiyrand-zquiokly locked-in a horizontalzposition flSFdESired;whichrincl-udesrmeans ito increaseithe comfort of the patient; :anii'whichfis simple .:in construction and inexpensive :to 3 manufacture.

51,101311112 V ;.-:1. .iInz-anoperating table, "a .supportxaztables ec--tion-ipivoted :on said :support to :swing abouts-s horizontal axis :adjacent ithe .eenter of said section 'and i-providing ia supportingsurface :for ithe bod-y of the vpatient, :a ,pair' ofssspaced'semi-cireuiar z rods sconcentric withsaidzaxia secured :to anddegpending :irom Ethfi under aside :of .said sssection', .z-ia:ttransverse riod fast r to said support :arrdvarrangedegeneral-lyiparall'el with said axis :adjaeent Jsaid semi-circular rods,,a :pair of stop ,plates' iffast Jto said transverse rods and: projacting atoward; a scarresponding one .of :said \seiniecircularrods, ea:stop :on' ea'ch of said .semi-circuiar rodsandcarranged *toipre'ventone. end of said. section from swinging said collars and said stopplates to bias said op-.

'posite end of said section upwardly to effect en- :gagemezitoaetweensaidrstopsaridlstcpiplate. r

*2. *Inan operating tabiefa"supporh'atable' section pivoted on saidsupport to swing about a *horizontal axis adjacent the center of saidsec ttlonl and providing a supporting surface forthe body of thepatient, a pair of spaced semi-circular rods concentric with said axis,secured to and dependingifromathe under side of said section, a crossbarconnecting said semi-circular rods intermediate the ends thereof andarranged generally parallelwith saidi'axis, a transverse rod fast to:said support and arranged generally 1 parallel with :isaidi-cross Jaarand, 1 in the rhorizori'taliposttion of isaida's'ection,-being:atrangedradiereeiit i -to said cross :ibar, springs'= ca;rriedasaid csemioir- $01332 mods and bearingag-airrst said --otransiterseIYGfdfitO urge one weed of said sectionupwardmrastop-oneach'of'said-semi-circular;rodsmnd beari-i-ng ragainst-csaid:rtnansverse rodtoiistop isa'idmp -ward vmovtement of said Zone end ofsaid section when *section reaches a -horizontal position, and a latchmemberzpivoted 'onisaidicross bar to swing about uthe 'axis sthereofand'v-including 'a latch eadapted tonambrace osaid transverse heir inSaid adjacent ipOSitl-OHS sofas-aid eross and i he following referencesare of record lh the .fiie :of l'th-i's patent: a

STATES

